---
product_id: 165454148
title: "Marine Phosphate Ultra Low Range Colorimeter – Checker HI774"
brand: "hanna instruments"
price: "€ 150.90"
currency: EUR
in_stock: true
reviews_count: 8
category: "Hanna Instruments"
url: https://www.desertcart.pt/products/165454148-marine-phosphate-ultra-low-range-colorimeter-checker-hi774
store_origin: PT
region: Portugal
---

# One-button intuitive operation Auto shut-off for extended battery life Ultra-precise phosphate detection Marine Phosphate Ultra Low Range Colorimeter – Checker HI774

**Brand:** hanna instruments
**Price:** € 150.90
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your reef thriving with precision phosphate insights!

## Quick Answers

- **What is this?** Marine Phosphate Ultra Low Range Colorimeter – Checker HI774 by hanna instruments
- **How much does it cost?** € 150.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/165454148-marine-phosphate-ultra-low-range-colorimeter-checker-hi774)

## Best For

- hanna instruments enthusiasts

## Why This Product

- Trusted hanna instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Auto Shut-Off:** Maximize battery life so you’re always ready to test
- • **Crystal Clear LCD Display:** Instantly read results with a large, easy-to-see screen
- • **Effortless One-Button Operation:** Simplify your testing routine with a single press
- • **Essential for Reef Tank Mastery:** Prevent algae overgrowth and protect your coral’s growth
- • **Lab-Grade Accuracy at a Fraction of the Cost:** More precise than chemical kits, without breaking the bank

## Overview

The HI774 Marine Phosphate Ultra Low Range Colorimeter by Hanna Instruments offers highly accurate, handheld phosphate testing tailored for marine and reef tanks. Featuring one-button operation, a large LCD screen, and auto shut-off, it delivers lab-quality results at an affordable price, helping reef enthusiasts maintain optimal water chemistry and coral health.

## Description

The HI774 Ultra Low Range Phosphate Checker HC (Handheld Colorimeter) is a cost-effective way to measure phosphate in marine systems, including reef tanks. Testing for phosphates is standard practice for saltwater aquariums and provides valuable insight into your reef tank's water chemistry to help ensure long-term coral health. Phosphates are one of the many forms of phosphorus compounds found in marine waters. Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or small-polyp stony. In addition, high phosphate levels can cause nuisance algae growth in your reef tank. This can become problematic because algae often outcompetes sessile organisms for light, nutrients, and space, jeopardizing long term coral health in your reef.

Review: Great checker - Works as described
Review: Glad I bought it - Well made. Reasonably priced. Easy to use. No guessing on the color of the test results.

## Features

- More accurate than chemical test kits, less expensive than professional testing
- Single button operation for ease of use
- Large LCD screen for readability
- Auto shut-off to extend battery life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZG5P7XV |
| Best Sellers Rank | #143,836 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Lab Colorimeters |
| Brand | Hanna Instruments |
| Brand Name | Hanna Instruments |
| Customer Reviews | 4.6 out of 5 stars 416 Reviews |
| Global Trade Identification Number | 00198715258356 |
| Item Form | Handheld Device |
| Item Weight | 11.21 ounces |
| Manufacturer | Hanna Instruments |
| Manufacturer Part Number | HI774 |
| Pet Type | Fish |
| Target Species | Fish |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Hanna Instruments
- **Item Form:** Handheld Device
- **Item Weight:** 11.21 ounces
- **Manufacturer:** Hanna Instruments
- **Unit Count:** 1 Count

## Images

![Marine Phosphate Ultra Low Range Colorimeter – Checker HI774 - Image 1](https://m.media-amazon.com/images/I/51ofqQKOIPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great checker
*by C***S on July 14, 2026*

Works as described

### ⭐⭐⭐⭐⭐ Glad I bought it
*by G***S on January 7, 2026*

Well made. Reasonably priced. Easy to use. No guessing on the color of the test results.

### ⭐⭐⭐⭐⭐ Most accurate phosphate checker on the market
*by B***Z on May 14, 2023*

While I’ve used other test kits for a while, it wasn’t always easy to determine the exact right color that the readings showed, and the range of results were sometimes a bit too broad and not specific enough in certain ranges. With the Hanna kit, it’s just as easy to test (despite the slightly finicky packets that you have to add the contents of into the small test vial), and the results are always an exact reading that leaves no room for questioning or wondering what the results might be like the color chart test kits can do. It’s a bit pricy compared to other kits, but it’s well worth the price if accuracy, consistency, and ease of use are important to you. Highly recommend the Hanna Phosphate checker!

## Frequently Bought Together

- Marine Phosphate Ultra Low Range Colorimeter – Checker HI774
- Hanna Instruments High Range Nitrate Checker HI782

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-21*